Controller mechanism.



T S. FUKERUD.

CONTROLLER MECHANISM.

APPLECATION FILED MAY20, Isms.

$1,29 ,??& Patented Apr. 8,1919.

WITNESSES iNVENTOR m SP/r d.

z ai f .mms PETERS m, PHOTO-Linux. WASMINGYON. n. a

vbarren s ram THOMAS S. PUKERUD, 0F WILKINSBURG,

PENNSYLVANIA, ASSIGNOB, T0 WEST INGHOUSE ELECTRIC ANDMANUFACTURING-.COLIPANY, A CORPORATION 0F PENNSYLVANIA.

CONTROLLER MECHANISM.

f0 all whom it mag/concern:

Be it known that I, THOMAS S. PUKERUD, a citizen of the United States,and a resident of Wilkinsburg, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in ControllerMechanisms, of which the following is a specification.

My invention relates to controller mechanisms such as are employed inconnection with electric motors, and it has for its object to provide adevice of the character. indicated which may be operated either by apower device or manually, at the will of the operator.

In the operation of controllers that are actuated by pilot motors orother power devices, it is sometimes necessary or desirable to adjustthe controllers by manually operable means. This is especially true withreference to controllers that are employed in connection with motors foroperating printing presses. The controller constituting thesubject-matter of the present invention is particularly adapted to beemployed for the purpose above mentioned.

I provide a controller that is adapted to be operated normally by apilot motor. The motor is operatively connected to the movable member ofthe controller by gear mechanism comprising a pivotally mountedsegmental gear wheel. The gear wheel is provided with a handle by meansof which it may be actuated into and out of engagement with a coactinggear wheel in order that the controller may. be actuated manually or bythe power device, as desired.

In the accompanying drawing, Figure 1 is a plan view of a controllerconstructed in accordance with my invention, parts being broken away.Fig. 2 is a side view, partially in elevation and partially in section,of the mechanism of Fig. 1, parts being omitted for the sake ofclearness.

A base plate 1 of suitable insulating material supports a series ofstationary contact members 2. which coact with the stationary contactmembers 2, are carried by arms 4 which may be, for example, three innumber, when employed in connection with three-phase circuits. In thepresent instance, only two arms are shown in Fig. 1, the third arm beingconcealed by the gear mechanism. The arms 4 are secured to, andinsulated from, a

Specification of Letters Patent.

Movable contact members 3,

Patent-ed Apr. 8, 1919;

Application filed May 20, 1916. Serial No. 98,796.

member 5 that is rotatably mounted on a shaft 6.

A pilot motor 7, which may be, for example, an electric motor, isoperatively connected to the member 5 by means of a worm 8, a worm wheel9, a pinionlO that is secured to the worm wheel 9 and a segmental gearwheel 11. The segmental gear wheel 11 is pivotally connected to themember 5 by means of a rod 12 in such manner that the gear wheel may bemoved laterally into and out of engagement with the pinion 10. A spring13 normally retains the gear wheel 11 in engagement with the pinion 10to complete the operative connection between the motor and the movablemembers of the controller. A handle lt is mounted upon the gear wheel 11for actuation by the operator in order thatthe disengagement of the gearwheel 11 and'the pinion 10 may be effected and that the controller maybe ad- 'usted manually while the gear mechanism is disconnected.

In the normal operation of the device, the controller is adjusted bycompleting the circuit of the motor in such manner as to cause theactuation of the arms l in the desired direction to adjust theresistance in the circuits controlled by the respective arms. In casethe circuit of the motor is not opened by the operator, limit switches15 open the motor circuit when one of the arms 4: has reached the end ofits path of travel in either direction. An electromagnetic brake l6frictionally engages a wheel 17 on the shaft of the pilot motor 7 whenthe circuit of the latter is open. An auxiliary relay 18 is controlledby a cam 19 that is secured to one of themovable arms 4. The electricalcircuits controlled by the various contact members and switch membersillustrated in the drawing are neither shown nor described since theyconstitute no part of the present invention and are not necessary to aclear and definite understanding of the same.

In case it is desired to adjust the controller manually or to change therelation .of the controller to the pilot motor 7, the segmental gearwheel 11 may be actuated downwardly, as viewed in Fig. 2, until itoccupies the position indicated by dotted lines. The gear wheel 11 isthus disengaged from the pinion 10, and the arms 4 may be adjusted toany desired position by the manual actuation of the handle 14. Upon therelease of the hanistics are desirab means comprising dle lljby theoperator, the gear Wheel 11 is returned to its normal position in engagement with the pinion 10 by the spring 13 which was placed, underengagement of the gear scribed.

Wheels above de- The arrangement above described is particularly adaptedfor use in connection with 1: l but it is also capable of beprlntingpresses, ing employed in connection with other mechanisms in whichsimilar operating characterle.

I claim as my invention:

1. Ina'controller, the combination with a movable arm and a powerdevice, of a member connected to said arm and movable into and out. ofadjustable coin ection to said power device, and a handle connected tosaid member for manually operating said arm.

2. In a controller,the combination with a movable member and a powerdevice, of

a pivotally mounted element for operatively connecting said device tosaid movable member, and an operating handle for actuating said elementout of operative relation to said device and for actuating said movablemember.

3. In a controller, the combinationwith-a movable contact member, amotor and gear mechanism for .oper'atively. connecting said motor tosaid contact member, of manually operable means for actuating one memberof said gear mechanism out of operative relation to said motor and foractuating said contact member.

4. In a controller, the combination With a movable arm, a pivotallymounted gear Wheel connected thereto and a handle on said gear Wheel foractuating it about its pivotal support and for actuating said arm, of amotor and means for operatively c'o'n-. necting the motor to the gearWheel.

5. In a controller, the combinationv with a movable arm and a motor, ofgear mechanism for operatively connecting said motor to said arm, saidmechanism comprising a pivotally mounted segmental gear Wheel, aco-acting gear Wheel, a spring for normally maintaining the operativerelation otsaid Wheel out of mesh tension by the d1s-,

means, and means handle for actuating said segmental gear With thecoacting gear wheel and for actuating .saidarm.

6. The combination with a movable elegearm'e'ch-anism, anda manuallyoperable ment andmeans for-moving it, of a member p'ivotally connectedto said movable element and adapted to move intoqand out of operative rconnection with said moving for yieldingly maintaining said member inoperative connection With said moving means.

7, The combination With a movable ele ment and a power device foractuating it, of means for operatively connecting said device tosaidelement oomprising a rotatable member and a member pivotallyconnected to said element for detachably engaging said member.

8. The combination With a movable element and apower device, of a pairof gear Wheels respectively operatively connected to said element and tosaid power device, and releasably connected toeach other and manuallyoperable means for actuating one of said gear Wheels out of operativerelation to said other gear Wheel, and for actuating said element.

9. The combination With movable means and means for moving it, of meansfor ad: justably connecting said moving means to said movable means andadapted to actuate said movable means independently ofrsaid movingmeans.

10. In a controller for electric machinery, the combination with amovable contact member, of a pilot motor, a segmental member permanentlyconnected to said contact member and adapted to be operatively connectedto said pilot motor to cause said pilot motor to actuate said contactmember, and means for disconnecting said segmental member from saidpilot motor and for actuating said contact member independently of saidpilot motor. V

In testimony whereof, I have hereunto subscribed my name this 28th dayof April 1916.

THOMAS S. PUKERUD.

Copies of this patentmay be obtained for five cents each, by addressingthe Cpmmissioner of Patents,

' Washington, D. C.

